@article{TM_1997_218_a8,
     author = {S. B. Gashkov},
     title = {On the complexity of integration of rational fractions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {122--133},
     publisher = {mathdoc},
     volume = {218},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_218_a8/}
}